src/mc/mc_comm_pattern.cpp

   1 /* Copyright (c) 2007-2017. The SimGrid Team. All rights reserved.          */
   2
   3 /* This program is free software; you can redistribute it and/or modify it
   4  * under the terms of the license (GNU LGPL) which comes with this package. */
   5
   6 #include <string.h>
   7
   8 #include "xbt/dynar.h"
   9 #include "xbt/sysdep.h"
  10 #include <xbt/dynar.hpp>
  11
  12 #include "src/mc/checker/CommunicationDeterminismChecker.hpp"
  13 #include "src/mc/mc_comm_pattern.hpp"
  14 #include "src/mc/mc_smx.h"
  15 #include "src/mc/mc_xbt.hpp"
  16
  17 using simgrid::mc::remote;
  18
  19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(mc_comm_pattern, mc,
  20                                 "Logging specific to MC communication patterns");
  21
  22 static void MC_patterns_copy(xbt_dynar_t dest,
  23   std::vector<simgrid::mc::PatternCommunication> const& source)
  24 {
  25   xbt_dynar_reset(dest);
  26   for (simgrid::mc::PatternCommunication const& comm : source) {
  27     simgrid::mc::PatternCommunication* copy_comm = new simgrid::mc::PatternCommunication(comm.dup());
  28     xbt_dynar_push(dest, &copy_comm);
  29   }
  30 }
  31
  32 void MC_restore_communications_pattern(simgrid::mc::State* state)
  33 {
  34   simgrid::mc::PatternCommunicationList* list_process_comm;
  35   unsigned int cursor;
  36
  37   xbt_dynar_foreach(initial_communications_pattern, cursor, list_process_comm)
  38     list_process_comm->index_comm = state->communicationIndices[cursor];
  39
  40   for (unsigned i = 0; i < MC_smx_get_maxpid(); i++)
  41     MC_patterns_copy(
  42       xbt_dynar_get_as(incomplete_communications_pattern, i, xbt_dynar_t),
  43       state->incomplete_comm_pattern[i]
  44     );
  45 }
  46
  47 void MC_state_copy_incomplete_communications_pattern(simgrid::mc::State* state)
  48 {
  49   state->incomplete_comm_pattern.clear();
  50   for (unsigned i=0; i < MC_smx_get_maxpid(); i++) {
  51     xbt_dynar_t patterns = xbt_dynar_get_as(incomplete_communications_pattern, i, xbt_dynar_t);
  52     std::vector<simgrid::mc::PatternCommunication> res;
  53     simgrid::mc::PatternCommunication* comm;
  54     unsigned int cursor;
  55     xbt_dynar_foreach(patterns, cursor, comm)
  56       res.push_back(comm->dup());
  57     state->incomplete_comm_pattern.push_back(std::move(res));
  58   }
  59 }
  60
  61 void MC_state_copy_index_communications_pattern(simgrid::mc::State* state)
  62 {
  63   state->communicationIndices.clear();
  64   simgrid::mc::PatternCommunicationList* list_process_comm;
  65   unsigned int cursor;
  66   xbt_dynar_foreach(initial_communications_pattern, cursor, list_process_comm)
  67     state->communicationIndices.push_back(list_process_comm->index_comm);
  68 }
  69
  70 void MC_handle_comm_pattern(
  71   e_mc_call_type_t call_type, smx_simcall_t req,
  72   int value, xbt_dynar_t pattern, int backtracking)
  73 {
  74   // HACK, do not rely on the Checker implementation outside of it
  75   simgrid::mc::CommunicationDeterminismChecker* checker =
  76     (simgrid::mc::CommunicationDeterminismChecker*) mc_model_checker->getChecker();
  77
  78   switch(call_type) {
  79   case MC_CALL_TYPE_NONE:
  80     break;
  81   case MC_CALL_TYPE_SEND:
  82   case MC_CALL_TYPE_RECV:
  83     checker->get_comm_pattern(pattern, req, call_type, backtracking);
  84     break;
  85   case MC_CALL_TYPE_WAIT:
  86   case MC_CALL_TYPE_WAITANY:
  87     {
  88     simgrid::mc::RemotePtr<simgrid::kernel::activity::CommImpl> comm_addr = nullptr;
  89     if (call_type == MC_CALL_TYPE_WAIT)
  90       comm_addr = remote(static_cast<simgrid::kernel::activity::CommImpl*>(simcall_comm_wait__getraw__comm(req)));
  91
  92     else {
  93       simgrid::kernel::activity::CommImpl* addr;
  94       // comm_addr = REMOTE(xbt_dynar_get_as(simcall_comm_waitany__get__comms(req), value, smx_synchro_t)):
  95       simgrid::mc::read_element(mc_model_checker->process(), &addr, remote(simcall_comm_waitany__get__comms(req)),
  96                                 value, sizeof(comm_addr));
  97       comm_addr = remote(addr);
  98       }
  99       checker->complete_comm_pattern(pattern, comm_addr,
 100         MC_smx_simcall_get_issuer(req)->pid, backtracking);
 101     }
 102     break;
 103   default:
 104     xbt_die("Unexpected call type %i", (int)call_type);
 105   }
 106
 107 }